Gray, George W. <br/><br/>
The organizer 

 - San Francisco :  Freeman,  1957 
 - (11) p.  : ilus 
 - Scientific American Offprints  ; 103 .
 - Scientific American Offprints  ; 103 .
<br/><br/> "Reprinted from Scientific American, November 1957" 
<br/><br/><label>LCCN: </label>15144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diferenciación (Biología)<br/>Embriología.